The link contained my solution! The memory chip must have become dislodged as the “soft click” re-engaged the chip or whatever was loose, and the player is now functional with all my music. Many thanks!
“While you have that back removed, a blue screen can also be caused if the Sansa cannot read the memory, if the daughterboard isn’t firmly plugged in. Gently press downward on the grey foam block above the battery, and listen for a soft click.”
